clutch problems

Thank you Bikeguy Joe for your response in the "solved whole chain tensioner thingy" Regarding my clutch problem, I removed the small metal rod in the center of the motor sprocket and cleaned out all the grease. The little ball bearing WAS in there, but it appears to be stuck. I was unable to get it out with a magnet or anything else I tried. I am confused by this because the rod and ball bearing fell right out on the floor before when the bike was accidentally tipped over. Also, no matter which way I move the clutch arm I don't feel anything.
About the tire...... If a 2.125 tire will rub on the chain, should I use a smaller tire and wheel on the back? Any help would be very appreciated.

use a smaller tire or try flipping the sprocket around where the offset of the teeth are farthest away from the tire sometines that enought to clear.

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MEASURE ONCE AND CUT TWICE.......WAIT A MINUTE

I am using a 2.125 tire and wheel...I had a problem with the chain rubbing the tire and I flipped the sprocket over, which gave me the Clarence.

But it caused another problem with the chain rubbing the seat stay. I was able to fix this problem with advice of the great members here. All I did was add two washers to give enough Clarence between the chain and seat stay.

Chain rubs seat stay

Hi Guys,
Thank you for your responses to my problem. I think I have the clutch working right now. I flipped the sprocket and have a bit more room between the chain and the tire, but it depends on how tight the chain is as to whether or not it it rubs. Have any of you had this experience and what did you do about it? I will check out the the link you posted about the chain rubbing the seat stay to see if I can find out anything to give me an idea about the tire. Thanks again for your help.

Make sure your chain runs in a straight line. Do not over tighten it, and make sure the rear lined up straight too.

What was the cure for the clutch ills?

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If it ain't broke, and you mess with it long enough, it will be.

It appears that the clutch was just an adjustment problem as was suggested. I am sure learning a lot with this project, thanks to all the help I am getting from this group.
What is the best way to make sure the chain is running straight. Since there are three points (the motor sprocket, the back wheel sprocket and the chain tensioner, I am thinking I could just run a straight edge between any two points and see if the third one lines up. Is there a better way to do this, how about with a laser level?
There seems to be a lot of opinions on just how tight the chain should be. I know it has to be tight enough to stay on the sprockets, but how much play should be in the bottom of the chain if the top part is snug?